Auburn, IN -- U.S. city in Indiana Population (2000): 12074 Housing Units (2000): 5258 Land area (2000): 6.647832 sq. miles (17.217806 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 6.647832 sq. miles (17.217806 sq. km) FIPS code: 02674 Located within: Indiana (IN), FIPS 18 Location: 41.365505 N, 85.056355 W ZIP Codes (1990): 46706 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Auburn, IN Auburn